Body style / driveline:
2-door, hardtop convertible / rear-wheel drive

Construction:
hydroformed perimeter frame, structural center tunnel, aluminum cockpit frame

Body material:
composite exterior panels

Manufacturing location:
Bowling Green, Kentucky

Key competitors:
Mercedes-Benz SL500, Lexus SC430, Jaguar XK8

Engine
Type:
Northstar 4.6L V-8 VVT (variable valve timing)

Displacement (cu in / cc):
279 / 4565

Bore & stroke (in / mm):
3.66 x 3.31 / 93 x 84

Block material:
cast aluminum

Cylinder head material:
cast aluminum

Crankshaft material:
forged steel

Valvetrain:
DOHC, 4 valves per cylinder, four-cam continuously variable valve timing

Ignition system:
coil-on-plug ignition, with extended-life dual platinum-tipped spark plugs

Fuel system:
sequential electronic fuel injection

Compression ratio:
10.5:1

Horsepower (hp / kw @ rpm):
320 / 239 @ 6400

Torque (lb-ft / Nm @ rpm):
310 / 420 @ 4400

Recommended fuel:
unleaded premium

Max. engine speed (rpm):
6700

Estimated fuel economy:

MPG (city / hwy / combined)
17 / 25 / 21

MPIG (city / hwy / combined)
20 / 33 / 24

L/100km (city / hwy / combined)
14.2 / 8.6 / 11.6

Transmission
Type:
Hydra-Matic 5L50-E rear-wheel drive, electronically controlled 5-speed automatic with torque converter clutch and Driver Shift Control

Gear ratios (:1):

First:
3.45

Second:
2.21

Third:
1.60

Fourth:
1.00

Fifth:
0.76

Reverse:
3.02

Final drive ratio:
2.93

Chassis/Suspension
Front:
short/long arm (SLA) double wishbone, cast aluminum upper & lower control arms, transverse-mounted composite leaf spring, Magnetic Ride Control

Rear:
short/long arm (SLA) double wishbone, cast aluminum upper & lower control arms, transverse-mounted composite leaf spring, Magnetic Ride Control

Steering type:
Magnasteer power-assisted rack-and-pinion

Steering ratio:
17.2:1

Steering wheel turns (lock to lock):
2.9

Turning diameter, curb to curb (ft / m):
39 / 11.9

Brakes
Type:
power-assisted disc with 4-channel ABS, front and rear

Rotor diameter x thickness (in / mm):
front: 12.8 x 1.3 / 325 x 32

rear: 12.0 x 1.0 / 305 x 26

Wheels/Tires
Wheel type and size:
spun-cast aluminum, 18 inch x 8 inch

Tires:
Michelin ZP Extended Mobility

front: P235/50R18

rear: P235/50R18

Dimensions
Exterior

Wheelbase (in / mm):
105.7 / 2685

Overall length (in / mm):
177.7 / 4513

Overall width (in / mm):
72.3 / 1836

Overall height (in / mm):
50.4 / 1279

Track (in / mm):
front: 62.2 / 1580

rear: 62.2 / 1580

Minimum ground clearance

(in / mm):
6.61 / 168

Curb weight (lb / kg):
3647 / 1654

Interior
Seating capacity
(front / rear):
2 / 0

Head room (in / mm):
37.6 / 955

Leg room (in / mm):
42.6 / 1083

Shoulder room (in / mm):
54.3 / 1380

Hip room (in / mm):
53 / 1346

Capacities
Cargo volume (cu ft / L):

Top up:
11.6 / 328

Top down:
4.4 / 125

Fuel tank (gal / L):
18 / 68.1

Engine oil (qt / L):
7.5 / 7.1

Performance
Acceleration (0-60 mph / 0-97 km/h):
5.8 sec.

Max. lateral acceleration:
0.90g